Valve-pin extractor



May 20 1924. M 1,495,047

| w. STAHL VALVE PIN EXTRACTOR Filed Jan. 27. 1923 Patented May 20, 1924.

UNITED STATES LOUIS W. STAI-IL, OF PETERSBURG, ILLINO'IS.

VALVE-PIN EXTRACTOR.

Application filed January 27, 1923. Serial No. 615,251.

State of Illinois, have invented certain new and useful Improvements in Valve-Pin EX- tractors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

The invention relates to valve tools and more particularly to an article of this nature for removing and replacing the pins associated with the valves of internal combustion engines, whereby the valve seating springs are retained in place.

For the most part the valve pins of internal combustion engines are so located that access thereto is difficult and troublesome. thereby adding materially to the effort of valve grinding when the same is undertaken by the average person.

The present invention provides a tool which admits of the valve pins being readily removed and easily and quickly replaced, said tool being constructed to admit of the pins being reached with the greatest ease and convenience, thereby obviating the obj ectionable feature incident to the removing and replacing of the valve pins when grinding the valves of internal combustion engines.

Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.

lVhile the drawings illustrate an embodiment of the invention it is to be understood that in adapting the same to meet different conditions and requirements, various changes in the form, proportion and minor details of construction may be resorted to without departing from the nature of the invention.

Referring to the accompanying drawings forming a part of the application:

Figure 1 is a side view of a valve pin ertractor embodying the invention,

Figure 2 is a front view thereof, and

Figure 3 is an end view of the pin gripping jaws.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference characters.

The tool comprises members 1 and 2which cross near one end and are pivoted at the point of crossing, as indicated at 3. The ends of the members 1 and 2 in advance of the pivot 3 terminate in jaws 4 and 5, r spectively, which are disposed relatively at an obtuse angle for convenience of gripping the valve pin when the handle portions of the tool are inclined ,to the vertical. The gripping face of the jaw i is transversely concave and the gripping face of the jaw 5 is correspondingly convex transversely. This facilitates the positioning of the tool, since the valve pin will readily center itself upon the concave jaw a. A longitudinal groove 6 of V-form is provided medially of the convex face of the jaw 5 and prevents displacement of the pin and enables the same to be firmly and securely gripped between the jaws. The member 2 terminates in a hook 7 which is adapted to be engaged about the hand and the member 1 terminates in a flat portion 8 adapted to receive the pressure of the thumb or other digit of the hand. The handle portions of the members 1 and 2 are of such relative length as to admit of the valve pin being reached withthe utmost ease and convenience,'the angular disposition of the jaws 4 and 5 making itpossible to incline the tool for convenience and ease of reaching the valve pin, both when removing the same or placing it in position. The jaw 5 is disposed above the jaw 4, the two jaws operatingsubstantially in a vertical plane, whereby to grip the valve pin from above and below.

What is claimed is:

A valve pin extractor comprising complemental members pivoted near one end and provided with coacting jaws disposed at an obtuse angle relative to the respective complemental members, the gripping face of the lower jaw being transversely concave and the gripping face ofthe upper jaw being transversely convex and formed with a medial longitudinal groove.

In testimony whereof I aflix my signature in presence of two witnesses.

LOUIS W. STAHL.

Witnesses:

F. F. JERGENS, A. Ro'rnsomnn. 

